My grandmother, born 1901, called them jubes rather Tarzan jubes. Basically jubes are jellied fruit lollies covered in sugar. I have a feeling Tarzan was one of those brand names that came to be inextricably associated with the common item, although it might have been post World War II. Jubes, in Nanna's time, were considered the ideal small gift for someone you didn't know very well. They were universally liked, considered a 'treat' and yet weren't outrageously expensive. A poor person's chocolate, if you will.